Describe the bug

When using aspire run to launch Aspire in conjunction with the MCP Inspector integration, the MCP Inspector launches because MCP_AUTO_OPEN_ENABLED defaults to true.

It should not do that.

Regression

No response

Steps to reproduce

1. Create a project with mcp inspector integration
2. Run `aspire run`

Expected behavior

Browser doesn't open

Screenshots

No response

IDE and version

VS Code

IDE version

No response

Nuget packages

Additional context

No response

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